Granted Patent
Utility
US 4,912,299 · App. 07/405,252
Gas metal arc welding of aluminum-based workpieces
Inventors:
Alvin Kenneth Oros, Paul D. DeJager
Patented Case
View Patent ↗
Granted: Mar 27, 1990
Filed: Sep 11, 1989
Inventors
Alvin Kenneth Oros
Paul D. DeJager
Assignee (at issue)
Ford Motor Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.